Abstract
WE have had occasion to separate alumina powder into uniformly sized groups for testing fuel niters, and to measure the particle-size microscopically. It seemed likely that a measurement of a linear dimension together with a factor describing the shape of the particles would be the most useful parameters to correlate with filter performance, since whether a particle will pass through the filter apertures will depend upon both size and shape. It was accordingly decided to use Feret's statistical diameter1.
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23 April 1949
An Erratum to this paper has been published: https://doi.org/10.1038/163634c0
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See Walton, W. H., Nature, 162, 329 (1948).
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AUSTEN, A., GILBERT, K. Shape Factor in Particle-Size Measurement. Nature 163, 527 (1949). https://doi.org/10.1038/163527b0
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DOI: https://doi.org/10.1038/163527b0
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